1222173 has 12 divisors (see below), whose sum is σ = 1776060. Its totient is φ = 809856.

The previous prime is 1222171. The next prime is 1222187. The reversal of 1222173 is 3712221.

It can be written as a sum of positive squares in 2 ways, for example, as 974169 + 248004 = 987^2 + 498^2 .

It is not a de Polignac number, because 1222173 - 2¹ = 1222171 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1765 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (148005).

2^1222173 is an apocalyptic number.

It is an amenable number.

1222173 is a deficient number, since it is larger than the sum of its proper divisors (553887).

1222173 is a wasteful number, since it uses less digits than its factorization.

1222173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 825 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 1222173 is about 1105.5193349734. The cubic root of 1222173 is about 106.9163756900.

Adding to 1222173 its reverse (3712221), we get a palindrome (4934394).

The spelling of 1222173 in words is "one million, two hundred twenty-two thousand, one hundred seventy-three".